1、文件属性操作

File类与FileInfo都能实现。静态方法与实例化方法的区别！

//use File classConsole.WriteLine(File.GetAttributes(filePath)); File.SetAttributes(filePath,FileAttributes.Hidden | FileAttributes.ReadOnly); Console.WriteLine(File.GetAttributes(filePath)); //user FilInfo class FileInfo fi = new FileInfo(filePath); Console.WriteLine(fi.Attributes.ToString()); fi.Attributes = FileAttributes.Hidden | FileAttributes.ReadOnly; //隐藏与只读 Console.WriteLine(fi.Attributes.ToString()); //只读与系统属性，删除时会提示拒绝访问 fi.Attributes = FileAttributes.Archive; Console.WriteLine(fi.Attributes.ToString());

2、文件路径

文件和文件夹的路径操作都在Path类中。另外还可以用Environment类，里面包含环境和程序的信息。

string dirPath = @"D:\TestDir"; string filePath = @"D:\TestDir\TestFile.txt"; Console.WriteLine("<<<<<<<<<<<{0}>>>>>>>>>>", "文件路径"); //获得当前路径 Console.WriteLine(Environment.CurrentDirectory); //文件或文件夹所在目录 Console.WriteLine(Path.GetDirectoryName(filePath)); //D:\TestDir Console.WriteLine(Path.GetDirectoryName(dirPath)); //D:\ //文件扩展名 Console.WriteLine(Path.GetExtension(filePath)); //.txt //文件名 Console.WriteLine(Path.GetFileName(filePath)); //TestFile.txt Console.WriteLine(Path.GetFileName(dirPath)); //TestDir Console.WriteLine(Path.GetFileNameWithoutExtension(filePath)); //TestFile //绝对路径 Console.WriteLine(Path.GetFullPath(filePath)); //D:\TestDir\TestFile.txt Console.WriteLine(Path.GetFullPath(dirPath)); //D:\TestDir //更改扩展名 Console.WriteLine(Path.ChangeExtension(filePath, ".jpg"));//D:\TestDir\TestFile.jpg //根目录 Console.WriteLine(Path.GetPathRoot(dirPath)); //D:\ //生成路径 Console.WriteLine(Path.Combine(new string[] { @"D:\", "BaseDir", "SubDir", "TestFile.txt" })); //D:\BaseDir\SubDir\TestFile.txt //生成随即文件夹名或文件名 Console.WriteLine(Path.GetRandomFileName()); //创建磁盘上唯一命名的零字节的临时文件并返回该文件的完整路径 Console.WriteLine(Path.GetTempFileName()); //返回当前系统的临时文件夹的路径 Console.WriteLine(Path.GetTempPath()); //文件名中无效字符 Console.WriteLine(Path.GetInvalidFileNameChars()); //路径中无效字符 Console.WriteLine(Path.GetInvalidPathChars());